Eurasian watermilfoil (Myriophyllum spicatum L.) has invaded over 81,000 hectares in the Chesapeake Bay, 2,023 hectares in TVA reservoirs, and upwards of 32,000 hectares in Currituck Sound, North Carolina. Now it is causing concern in Florida because of its invasion of the Crystal-Homosassa River basin. In Yugoslavia and Pakistan, entomologists working on PL-480 grants found some 25 insect species feeding on eurasian watermilfoil. These species are potentially useful for the biological control of the weed in the United States.